<template>
  <div class="camera_outer" style="flex: 1;display:inline-block;width:500px;text-align:center;padding-top: 120px">
    <video
        id="videoCamera"
        :width="videoWidth"
        :height="videoHeight"
        autoplay
    ></video>
    <canvas
        style="display: none"
        id="canvasCamera"
        :width="videoWidth"
        :height="videoHeight"
    ></canvas>
    <!--    <div v-if="imgSrc" class="img_bg_camera">-->
    <!--      <img :src="imgSrc" alt="" class="tx_img" />-->
    <!--    </div>-->
    <!--    <button @click="getCompetence()">打开摄像头</button>-->
<!--    <button @click="stopNavigator()">关闭摄像头</button>-->
    <div style="padding-left: 5px;padding-top: 30px">
      <el-button type="primary" round @click="setImage()" size="large" :icon="FullScreen">点击扫描</el-button>
<!--      <button @click="setImage()">扫描</button>-->
    </div>

  </div>

</template>
<script setup>
import { FullScreen } from '@element-plus/icons-vue'
</script>


<script>

import request from "@/utils/request";
import { SmileOutlined} from '@ant-design/icons-vue';
import { notification } from 'ant-design-vue';
import { h } from 'vue';
import store from "@/store";


const OSS = require("ali-oss");
const Buffer = require('buffer/').Buffer;
// const toBuffer = require('blob-to-buffer');

//这些都是后台给的 包括 阿里云的地址 id 密码  名称
const client = new OSS({
  region: 'oss-cn-shenzhen',
  // endpoint: "",
  accessKeyId: 'LTAI5tGKyPEzHa1utAWtMeBK',
  accessKeySecret: 'lixg2jpJtGgzdZWzbYLdsrOxnROk3o',
  bucket: 'barcode-sms'
});

export default {
  data() {
    return {
      videoWidth: 300,
      videoHeight: 300,
      imgSrc: "",
      thisCancas: null,
      thisContext: null,
      thisVideo: null,
      apiUrl:"https://route.showapi.com/2275-4?showapi_appid=1066592&showapi_sign=b8eb4b1c82c14db5823f6ec4a0b11519"
    };
  },
  mounted() {
    this.getCompetence();
    // this.off()

  },
  // beforeMount(){
  //   this.getCompetence();
  // },
  methods: {
    // off(){
    //   if (store.getters.getCode===223)
    //   {
    //     this.getCompetence()
    //     this.stopNavigator()
    //   }
    // },
    // 调用权限（打开摄像头功能）
    getCompetence() {
      var _this = this;
      this.thisCancas = document.getElementById("canvasCamera");
      this.thisContext = this.thisCancas.getContext("2d");
      this.thisVideo = document.getElementById("videoCamera");
      // 旧版本浏览器可能根本不支持mediaDevices，我们首先设置一个空对象
      if (navigator.mediaDevices === undefined) {
        navigator.mediaDevices = {};
      }
      // 一些浏览器实现了部分mediaDevices，我们不能只分配一个对象
      // 使用getUserMedia，因为它会覆盖现有的属性。
      // 这里，如果缺少getUserMedia属性，就添加它。
      if (navigator.mediaDevices.getUserMedia === undefined) {
        navigator.mediaDevices.getUserMedia = function (constraints) {
          // 首先获取现存的getUserMedia(如果存在)
          var getUserMedia =
              navigator.webkitGetUserMedia ||
              navigator.mozGetUserMedia ||
              navigator.getUserMedia;
          // 有些浏览器不支持，会返回错误信息
          // 保持接口一致
          if (!getUserMedia) {
            return Promise.reject(
                new Error("getUserMedia is not implemented in this browser")
            );
          }
          // 否则，使用Promise将调用包装到旧的navigator.getUserMedia
          return new Promise(function (resolve, reject) {
            getUserMedia.call(navigator, constraints, resolve, reject);
          });
        };
      }
      var constraints = {
        audio: false,
        video: {
          width: this.videoWidth,
          height: this.videoHeight,
          transform: "scaleX(-1)",
        },
      };
      navigator.mediaDevices
          .getUserMedia(constraints)
          .then(function (stream) {
            // 旧的浏览器可能没有srcObject
            if ("srcObject" in _this.thisVideo) {
              _this.thisVideo.srcObject = stream;
            } else {
              // 避免在新的浏览器中使用它，因为它正在被弃用。
              _this.thisVideo.src = window.URL.createObjectURL(stream);
            }
            _this.thisVideo.onloadedmetadata = function (e) {
              _this.thisVideo.play();
            };
          })
          .catch((err) => {
            console.log(err);
          });
    },
    //  绘制图片（拍照功能）
    async setImage() {
      var _this = this;
      // 点击，canvas画图
      _this.thisContext.drawImage(
          _this.thisVideo,
          0,
          0,
          _this.videoWidth,
          _this.videoHeight
      );
      // 获取图片base64链接
      var image = this.thisCancas.toDataURL("image/png");
      _this.imgSrc = image;
      // this.$emit("refreshDataList", this.imgSrc);
      console.log(_this.imgSrc)

      const blob = this.dataURLtoBlob(_this.imgSrc);
      // blob转arrayBuffer
      const reader = new FileReader();
      reader.readAsArrayBuffer(blob);
      reader.onload = event => {
        // arrayBuffer转Buffer
        const buffer = this.toBuffer(event.target.result);
        //命名规则 以后缀为文件目录  md5为文件名  可自定义
        //${this.suffix}/${this.pw}.${this.suffix}
        let date=new Date().valueOf()
        client.put(`${this.suffix}/${date}.jpg`, buffer)
            .then(res => {
              console.log(res);
              // let obj=JSON.parse(res);
              // let obj=eval("(" + res + ")");
              console.log(res.url)
              let data = {"image_url":res.url};
              request.get("http://localhost:8002/goods/scan?url="+res.url).then(res=>{
                console.log(res)

                switch (res.code){
                  case 201:
                    this.stopNavigator()
                    this.$store.commit('setData',res.data)
                    this.$store.commit('setImageUrl',res.data.url)
                    this.$router.push({
                      path:'/sms/input'
                    })
                    break
                  case 200:
                    this.$store.commit('setData',res.data)
                    this.$store.commit('setImageUrl',res.data.url)
                      if(store.getters.getCode===222)
                      {
                        store.commit("setCode",223)
                        this.$router.push("/sms/rounte")
                      }else {
                        this.stopNavigator()
                        this.$router.push({
                        path:'/sms/goodsinfo'
                      })
                      }

                    break
                  default :
                    notification.open({
                      message: res.message,
                      icon: () => h(SmileOutlined, { style: 'color: #ffb501' }),
                    });
                    break
                }

              })
            })
            .catch(err => {
              console.log(err);
            });
      };
    },
    toBuffer(ab) {
      var buf = Buffer.from(ab)
      return buf;
    },
    dataURLtoBlob(dataurl) {

      var arr = dataurl.split(','),
          mime = arr[0].match(/:(.*?);/)[1],
          bstr = atob(arr[1]),
          n = bstr.length,
          u8arr = new Uint8Array(n);
      while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
      }
      return new Blob([u8arr], {type: mime});
    }
    ,
// base64转文件
    dataURLtoFile(dataurl, filename) {
      var arr = dataurl.split(",");
      var mime = arr[0].match(/:(.*?);/)[1];
      var bstr = atob(arr[1]);
      var n = bstr.length;
      var u8arr = new Uint8Array(n);
      while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
      }
      return new File([u8arr], filename, {type: mime});
    }
    ,
// 关闭摄像头
    stopNavigator() {
      this.thisVideo.srcObject.getTracks()[0].stop();
      this.thisVideo.srcObject.getTracks().forEach(track => track.stop())

    }
  }
}
;
</script>

<style lang="scss">
.camera_outer {
  position: relative;
  overflow: hidden;
  background-size: 100%;

  video,
  canvas,
  .tx_img {
    -moz-transform: scaleX(-1);
    -webkit-transform: scaleX(-1);
    -o-transform: scaleX(-1);
    transform: scaleX(-1);
  }

  .btn_camera {
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.3);
    line-height: 50px;
    text-align: center;
    color: #ffffff;
  }

  .bg_r_img {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
  }

  .img_bg_camera {
    position: absolute;
    right: 0;
    top: 0;

    img {
      width: 300px;
      height: 300px;
    }

    .img_btn_camera {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 50px;
      line-height: 50px;
      text-align: center;
      background-color: rgba(0, 0, 0, 0.3);
      color: #ffffff;

      .loding_img {
        width: 50px;
        height: 50px;
      }
    }
  }
}
</style>